AttributeError: 'Config' object has no attribute '_mypy_results_path'

[andreas-wolf]

I get this error when using the plugin v0.10.3 together with xdist 3.5.0
addopts = --numprocesses=auto --mypy

.nox/tests-3-12/lib/python3.12/site-packages/_pytest/main.py:306: PluggyTeardownRaisedWarning: A plugin raised an exception during an old-style hookwrapper teardown.
Plugin: terminalreporter, Hook: pytest_sessionfinish
AttributeError: 'Config' object has no attribute '_mypy_results_path'

[GergelyKalmar]

I see the same, seems to be the case since pluggy 1.4.0: https://github.com/pytest-dev/pluggy/blob/main/CHANGELOG.rst#pluggy-140-2024-01-24

[GergelyKalmar]

I also got this as a reference in the logs: For more information see https://pluggy.readthedocs.io/en/stable/api_reference.html#pluggy.PluggyTeardownRaisedWarning

[dmtucker]

Hey thanks for the report!
I haven't been able to repro with Python 3.12, pytest-xdist-3.5.0, and pluggy-1.4.0 🤔

$ venv/bin/pytest --mypy -n auto demo/test_demo.py 
====================== test session starts =======================
platform linux -- Python 3.12.1, pytest-8.0.0, pluggy-1.4.0
Using --randomly-seed=3813770279
rootdir: /home/dtux/Projects/pytest-mypy
configfile: tox.ini
plugins: xdist-3.5.0, mypy-0.10.3, randomly-3.15.0, forked-1.6.0, cov-2.12.1
8 workers [4 items]     
...F                                                       [100%]
============================ FAILURES ============================
__________________________ test session __________________________
[gw1] linux -- Python 3.12.1 /home/dtux/Projects/pytest-mypy/venv/bin/python
mypy exited with status 1.
============================== mypy ==============================
demo/uncollected.py:1: error: Incompatible types in assignment (expression has type "int", variable has type "str")  [assignment]
Found 1 error in 1 file (checked 1 source file)
==================== short test summary info =====================
FAILED demo/test_demo.py::mypy1.8.0-status
================== 1 failed, 3 passed in 1.39s ===================

What version of Pytest are you using?

[GergelyKalmar]

The requirements:

pytest==7.4.4
mypy==1.8.0
pytest-mypy==0.10.3
pytest-xdist[psutil]==3.5.0

Reproducer (test.py):

x: int = 'invalid'

Invoke it as pytest --mypy -n auto.

I'm using Python 3.8 on Ubuntu 20.04.

Looks like the issue is gone with pytest 8.0 though.